int
slfid_to_vfsid(slfid_t fid, int *vfsid)
{
int i, siteid;
/*
* Our client uses this special fid to contact us during mount,
* at which time it does not know the site ID yet.
*
* XXX The client should be able to retrieve the site id from
* the slash2 config file.
*/
if (fid == SLFID_ROOT) {
*vfsid = current_vfsid;
return (0);
}
/* only have default file system in the root */
if (zfs_nmounts == 1) {
*vfsid = current_vfsid;
return (0);
}
siteid = FID_GET_SITEID(fid);
for (i = 0; i < zfs_nmounts; i++) {
if (zfs_mounts[i].zm_siteid == (uint64_t)siteid) {
*vfsid = i;
return (0);
}
}
return (-EINVAL);
}
int
slc_fcmh_ctor(struct fidc_membh *f, __unusedx int flags)
{
struct fcmh_cli_info *fci;
struct sl_resource *res;
struct sl_site *s;
sl_siteid_t siteid;
int i;
fci = fcmh_get_pri(f);
slc_fcmh_refresh_age(f);
INIT_PSC_LISTENTRY(&fci->fci_lentry);
siteid = FID_GET_SITEID(fcmh_2_fid(f));
psc_assert(f->fcmh_flags & FCMH_INITING);
if (fcmh_2_fid(f) != SLFID_ROOT &&
siteid != msl_rmc_resm->resm_siteid) {
s = libsl_siteid2site(siteid);
if (s == NULL) {
psclog_errorx("fid "SLPRI_FID" has "
"invalid site ID %d",
fcmh_2_fid(f), siteid);
return (ESTALE);
}
SITE_FOREACH_RES(s, res, i)
if (res->res_type == SLREST_MDS) {
fci->fci_resm = psc_dynarray_getpos(
&res->res_members, 0);
return (0);
}
psclog_errorx("fid "SLPRI_FID" has invalid site ID %d",
fcmh_2_fid(f), siteid);
return (ESTALE);
}
int
main(int argc, char *argv[])
{
char *p, tmbuf[PFL_CTIME_BUFSIZ], *cursor_file = NULL, c;
uint64_t newtxg = 0, newfid = 0, fid, cycle, newcycle;
int dump = 0, verbose = 0, fd, rc;
struct psc_journal_cursor cursor;
progname = argv[0];
while ((c = getopt(argc, argv, "c:df:vx:")) != -1)
switch (c) {
case 'c':
cursor_file = optarg;
break;
case 'd':
dump = 1;
break;
case 'f':
newfid = strtol(optarg, NULL, 0);
break;
case 'v':
verbose = 1;
break;
case 'x':
newtxg = strtol(optarg, NULL, 0);
break;
default:
usage();
}
argc -= optind;
if (argc || !cursor_file)
usage();
fd = open(cursor_file, O_RDWR);
if (fd < 0)
err(1, "failed to open %s", cursor_file);
rc = pread(fd, &cursor, sizeof(struct psc_journal_cursor), 0);
if (rc != sizeof(struct psc_journal_cursor))
err(1, "cursor file read");
ctime_r((time_t *)&cursor.pjc_timestamp, tmbuf);
p = strchr(tmbuf, '\n');
if (p)
*p = '\0';
cycle = FID_GET_CYCLE(cursor.pjc_fid);
if (dump || verbose) {
printf("Cursor contents of %s:\n"
"\tmagic %"PRIx64"\n"
"\tversion %"PRIx64"\n"
"\ttimestamp %"PRId64" (%s)\n"
"\tuuid %s\n"
"\tcommit_txg %"PRId64"\n"
"\tdistill_xid %"PRId64"\n"
"\tfid %#"PRIx64" "
"(flag=%"PRIx64", siteid=%"PRIx64", "
"cycle=%"PRIx64", inum=%"PRIx64")\n"
"\tseqno_lwm %"PRIx64"\n"
"\tseqno_hwm %"PRIx64"\n"
"\ttail %"PRIx64"\n"
"\tupdate_seqno %"PRIx64"\n"
"\treclaim_seqno %"PRIx64"\n"
"\treplay_xid %"PRIx64"\n\n",
cursor_file,
cursor.pjc_magic,
cursor.pjc_version,
cursor.pjc_timestamp, tmbuf,
cursor.pjc_uuid,
cursor.pjc_commit_txg,
cursor.pjc_distill_xid,
cursor.pjc_fid,
FID_GET_FLAGS(cursor.pjc_fid),
FID_GET_SITEID(cursor.pjc_fid),
FID_GET_CYCLE(cursor.pjc_fid),
FID_GET_INUM(cursor.pjc_fid),
cursor.pjc_seqno_lwm, cursor.pjc_seqno_hwm,
cursor.pjc_tail, cursor.pjc_update_seqno,
cursor.pjc_reclaim_seqno, cursor.pjc_replay_xid);
fid = cursor.pjc_fid;
fid = fid | FID_MAX_INUM;
printf("The max FID for this cycle is %#"PRIx64"\n", fid);
if (cycle < ((UINT64_C(1) << SLASH_FID_CYCLE_BITS) - 1)) {
fid++;
printf("The first FID for the next cycle is %#"PRIx64"\n", fid);
}
if (dump)
exit(0);
}
if (!newtxg && !newfid)
errx(1, "neither fid nor txg was specified");
if (newtxg)
cursor.pjc_commit_txg = newtxg;
if (newfid) {
newcycle = FID_GET_CYCLE(newfid);
if (newcycle <= cycle)
errx(1, "cycle must be increased when setting a new FID");
cursor.pjc_fid = newfid;
}
rc = pwrite(fd, &cursor, sizeof(struct psc_journal_cursor), 0);
if (rc != sizeof(struct psc_journal_cursor))
err(1, "cursor file write");
if (close(fd) == -1)
err(1, "cursor file close");
exit(0);
}
/*
* Forward a name space operation to a remote MDS first before
* replicating the operation locally by our callers.
*/
int
slm_rmm_forward_namespace(int op, struct sl_fidgen *fg,
struct sl_fidgen *nfg, char *name, char *newname, uint32_t mode,
const struct slash_creds *crp, struct srt_stat *sstb,
int32_t to_set)
{
struct slashrpc_cservice *csvc = NULL;
struct pscrpc_request *rq = NULL;
struct sl_resm *resm = NULL;
struct srm_forward_req *mq;
struct srm_forward_rep *mp;
struct sl_resource *res;
struct sl_site *site;
int rc, len, i, vfsid;
sl_siteid_t siteid;
if (op != SLM_FORWARD_MKDIR && op != SLM_FORWARD_RMDIR &&
op != SLM_FORWARD_CREATE && op != SLM_FORWARD_UNLINK &&
op != SLM_FORWARD_RENAME && op != SLM_FORWARD_SETATTR &&
op != SLM_FORWARD_SYMLINK)
return (-PFLERR_NOSYS);
rc = slfid_to_vfsid(fg->fg_fid, &vfsid);
if (rc)
return (rc);
siteid = FID_GET_SITEID(fg->fg_fid);
site = libsl_siteid2site(siteid);
if (site == NULL)
return (-EBADF);
SITE_FOREACH_RES(site, res, i) {
if (res->res_type != SLREST_MDS)
continue;
resm = psc_dynarray_getpos(&res->res_members, 0);
break;
}
csvc = slm_getmcsvc_wait(resm);
if (csvc == NULL) {
psclog_info("unable to connect to site %d", siteid);
return (-EIO);
}
rc = SL_RSX_NEWREQ(csvc, SRMT_NAMESPACE_FORWARD, rq, mq, mp);
if (rc)
goto out;
mq->op = op;
mq->fg = *fg;
if (op == SLM_FORWARD_SETATTR) {
mq->to_set = to_set;
mq->req.sstb = *sstb;
} else
strlcpy(mq->req.name, name, sizeof(mq->req.name));
if (op == SLM_FORWARD_RENAME || op == SLM_FORWARD_SYMLINK) {
if (op == SLM_FORWARD_RENAME)
mq->nfg = *nfg;
len = strlen(name) + 1;
strlcpy(mq->req.name + len, newname,
sizeof(mq->req.name) - len);
}
if (op == SLM_FORWARD_MKDIR ||
op == SLM_FORWARD_CREATE ||
op == SLM_FORWARD_SYMLINK) {
mq->mode = mode;
mq->creds.scr_uid = crp->scr_uid;
mq->creds.scr_gid = crp->scr_gid;
}
rc = SL_RSX_WAITREP(csvc, rq, mp);
if (!rc)
rc = mp->rc;
if (!rc && sstb)
*sstb = mp->attr;
out:
if (rq)
pscrpc_req_finished(rq);
if (csvc)
sl_csvc_decref(csvc);
return (rc);
}